CVE-2019-4279

Name: CVE-2019-4279
Creator: NVD / NIST
Published: 2019-05-17T16:29:03.47+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 80.37%

Last modified Jun 17, 2026

CVE-2019-4279 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 160445.. EPSS estimates a 80.37% chance of exploitation in the next 30 days.

Description

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 160445.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

80.37%

99.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Ibm	Websphere Application Server	>= 8.5.0.0, <= 8.5.5.15
Ibm	Websphere Application Server	>= 9.0.0.0, <= 9.0.0.11
Ibm	Websphere Application Server	7.0.0.0

References

http://www.securityfocus.com/bid/108450Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/160445VDB Entry, Vendor Advisory
https://www.ibm.com/support/docview.wss?uid=ibm10883628Vendor Advisory
http://www.securityfocus.com/bid/108450Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/160445VDB Entry, Vendor Advisory
https://www.ibm.com/support/docview.wss?uid=ibm10883628Vendor Advisory

Timeline

Published: May 17, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4279?

How severe is CVE-2019-4279?

CVE-2019-4279 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 80.37% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4279?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-4279?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST